Results 21 to 30 of about 21,073 (269)

Infrared Spectra of Small Radicals for Exoplanetary Spectroscopy: OH, NH, CN and CH: The State of Current Knowledge

Molecules, 2023
In this study, we present a current state-of-the-art review of middle-to-near IR emission spectra of four simple astrophysically relevant molecular radicals—OH, NH, CN and CH.
Svatopluk Civiš, Adam Pastorek, Martin Ferus, Sergei N. Yurchenko, Noor-Ines Boudjema   +4 more
doaj   +1 more source

Correlations between laboratory line lists for FeH, CrH, and NiH and M-star spectra collected with ESPaDOnS and SPIRou

, 2023
International audienceMolecular bands of metal oxides and hydrides dominate the optical and near-infrared spectra of M dwarfs. High-resolution spectra of these bands have immense potential for determining many properties of these stars, such as effective
A.J. Ross, D.W. Tokaryk, Kóspál, A., P. Crozet, J.-F. Donati, P. Petit, Adam, A., A. G. Adam, Bellotti, S., Petit, P., Tokaryk, D. W., Donati, J., Adam, A. G., Ross, A. J., J. Morin, Tokaryk, D., Donati, J. F., A. Kóspál, Morin, J., P. Fouqué, C. Moutou, Ross, A., Crozet, P., Moutou, C., Morin, Julien, A.G. Adam, A. J. Ross, A. Carmona, Fouqué, P., Carmona, A., S. Bellotti, J.F. Donati, D. W. Tokaryk   +32 more
core   +1 more source

Spectral analysis of high resolution near-infrared spectra of ultra cool dwarfs [PDF]

, 2007
Aims. We present an analysis of high resolution spectra in the J band of five ultra cool dwarfs from M6 to L0. Methods. We make use of a new ab initio water vapour line list and existing line lists of FeH and CrH for modelling the observations.
Lyubchik, Y., Jones, H. R.A., Martin, E., McLean, I. S., Pavlenko, Y. V.   +4 more
core   +3 more sources

Spectral line list of potential cosmochronological interest deduced from new calculations of radiative transition rates in singly ionized thorium (Th ii)

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACTIn this work, we report a list of 91 strong Th ii spectral lines in the visible wavelength region that could be used as cosmochronometers in future investigations to determine stellar ages from thorium radioactive decay. This list was established on the basis of a pseudo-relativistic Hartree–Fock model including core-polarization corrections ...
K Wang, P Quinet, P Palmeri, M R Godefroid, S Gamrath   +4 more
openaire   +2 more sources

ON THE GF-VALUES FOR SOME DIATOMIC MOLECULAR SPECTRA

Odessa Astronomical Publications, 2017
In view of rich structure of the energy levels and the variety of transition types which are observable, molecules are the useful tool for investigation of physical parameters of stellar atmospheres, interstellar and circumstellar matter.
L. A. Kuznetsova, A. V. Shavrina
doaj   +1 more source

High-accuracy Line Lists Of Methane And Formaldehyde Between 1240 And 1380 Cm−1 From Fourier-transform Optical Frequency Comb Spectroscopy [PDF]

, 2022
Many small molecules have strong vibrational bands between 1000 to 1500 \wn. This spectral range overlaps with the atmospheric water window and lies within the sensitivity range of space observatories such as the James Webb Space Telescope. Therefore, it
Germann, Matthias
core   +1 more source

The missing conformer: A comprehensive rotational spectroscopy study and astronomical search of two conformers of methyl cyanoacetate

Frontiers in Astronomy and Space Sciences, 2022
We performed a comprehensive investigation of methyl cyanoacetate (MCA) using high-resolution Fourier transform rotational spectroscopy. Two low energy conformers of MCA were observed in the vibrational ground state, in selected frequency regions from 2 ...
Gayatri Batra, Gayatri Batra, Pablo Pinacho, Amanda L. Steber, Amanda L. Steber, Víctor M. Rivilla, Jesús Martín-Pintado, Izaskun Jiménez-Serra, Melanie Schnell, Melanie Schnell   +9 more
doaj   +1 more source

Impact of Molecular Spectroscopy on Carbon Monoxide Abundances from SCIAMACHY

Remote Sensing, 2020
High-quality observations have indicated the need for improved molecular spectroscopy for accurate atmospheric characterization. Line data provided by the new SEOM-IAS (Scientific Exploitation of Operational Missions—Improved Atmospheric Spectroscopy ...
Philipp Hochstaffl, Franz Schreier
doaj   +1 more source

Molecules in Cool Stars: The A2Π − X2Σ+ and the B2Σ+ − X2Σ+ Band Systems of CaCl

The Astrophysical Journal
Cool red giant stars exhibit absorption bands of calcium monochloride (CaCl) in the optical region. In this work, the bands of CaCl corresponding to the A ^2 Π − X ^2 Σ ^+ transition with ${v}^{{\prime} }\leqslant $ 4 and v ″ ≤ 4, and B ^2 Σ ^+ − X ^2 Σ ^
Léo Lavy, Peter F. Bernath
doaj   +1 more source

A Bibliometric Analysis of Publications in Uremic Toxins From 1991 to 2024

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Uremic toxins are a growing area of research in nephrology, with significant implications in the progression and treatment of chronic kidney disease (CKD) and the management of end‐stage kidney disease (ESKD). This bibliometric analysis aims to evaluate the global research trends, key contributors, and the impact of publications in ...
Yuh‐Shan Ho, Karim M. Soliman, Wisit Cheungpasitporn, Wannasit Wathanavasin, Ahmed Daoud, Ahmed I. Kamal, Balázs Szamosfalvi, Tibor Fülöp   +7 more
wiley   +1 more source